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Uii AF (No Model.) 2 Sheets-Sheet 1.

T. H. BURRIDGE.

STREET GAR MOTOR.

N0. -398,207. Patented Nov. 20, 1888.

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(No Model.) 2 Sheets-Sheet 2.

, T. H. BURRIDGE.

STREET GAR MOTOR.

No. 398,207. Patented l gov. 20, 1888.

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UNITED STATES PATENT Grinch.

THOMAS H. BURRIDGE, OF ST. LOUIS, MISSOURI.

STREET-CAR MOTOR.-

SPECIPICATION forming part of Letters Patent No. 393,207, dated November20, 1888.

Application filed March 29, 1888. Serial No. 268,766. (No model.)

To (1. whom it may concern.-

Be it known that 1, THOMAS H. BURRIDGE, of the city of St. Louis, in theState of Missouri, have invented a certain new and useful Improvement inStreet-Oar Motors, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification.

This is a device for driving the car with compressed air carried in areservoir upon the car. The-air may be used either in a reciprocatingengine, as shown, or in a rotary engine, no novelty being claimed in theengine per se. ,The air in the reservoir is expanded by heat I fromgas-flames fed by gas from a reservoir in Jlwhich it is carried on thecar in a compressed ljcondition, or by a carbureting device upon thecar, as shown. fli lgaatedproduets of combustion are carried from apipepassing 2 hr' g 'mr rvoiiiftcaj..chamher-surroundifig'thecylind'erbf the engi lefipd forminga irm iggcliefi *FigurFI is a top view of the apparatus. Fig. II is alongitudinal section at II II, Fig. III. Fig. III is a horizontalsection at III III, Fig. II.

At 1 are the drive-wheels, and at 2 other supporting-wheels, of which 3is the axle. The axle of the drive-wheels may be made in two parts, 4,each of which has at its inner end a crank, 5. The two cranks areconnected in such relative position that each will carry the other overthe dead-center. The axle 4 may be cast in one piece, with the twocranks 5 upon it. To each crank 5 is connected a rod, 6. One of theconnecting-rods 6 is strapped to a bracket, 7, upon the piston-rod 8.This piston-rod is tubular and within it works another piston-rod, 9. Toeach of these rods is attached a piston which works in a separatechamber to the other piston, the cylinder being divided into twochambers by a transverse partition or diaphragm, through which the solidpiston-rod 9 passes.

As heretofore said, no novelty is claimed in the engine per so, as it isnot new in the form shown, and any suitable engine may be used to turnthe axle or axles of the drive-wheels. The engine which is, shown isdescribed in the 50 patent of D. P. Kane, No. 306,930, dated October 21,1884. At 10 are shown the reservoirs or chambers containing thecompressed air. These may be filled with air under pressure at the endof the car-line or at any point on the line. 11 is a pipe leading fromthe vessels 10 to the valve-chest 12 of the engine. 13 are eccentrics onthe axle, working by the accentric-rods 14 the rock-shaft 15.

16 are arms on the rock-shaft, to which the passes around a pulley, 21,on the drive-axle 4, and a pulley, 22, on the shaft of theblower. Theblower discharges air through the nozzle 23 into one side of a box orcase, 24, within which turns a wheel, 25, having on it radial buckets orwings 26, whose ends are in close proximity to the ends of the box, andwhose upper edges, when they are in a vertical position, are in closeproximity to the top of the box. The buckets are formed of wire-gauzestretched on a frame. The bucket-shaft is horizontal and turns freely inbearings 27 in the side of the closed box 24. The box 24 is partlyfilled with water, as seen at 28 in Fig. II, so that as the wheel turnsthe buckets are immersed in water and carry up the liquid with them asthe wheel is turned by the pressure of the air upon the elevatedbuckets. The wet buckets arrest all the dust which may be mixed with theair, so that the air leaving the box is clear. The box 24 contains,preferably,

more than one of these wheels 25, two being, 1

shown in Fig. II, (one in full lines and the other in broken lines.)

The clear air leaves the box 24 through a pipe, 29, that descends to thelower part of a closed box or tank, 30, containing benzole or otherhydrocarbonaceous liquid, as seen at 31, Fig. II. The air is forced bythe blower through the pipe 29 and ascends through the benzole or otherliquid, 31, where the inflammable gas mixes with the air from the upperpart of the box 30. The air, laden with the part of each of thecompartments 35, and hav- 7 additionally carbureted in passing throughthe 3ojto radiate heat throughout the reservoir or gas, passes into apipe, 32, which extends beneath a box or case, 33, having, preferably, anumber of partitions, 34, extending from the bottom to near the top, soas to separate the ease into a number of compartments,35,whieh containsponge or other porous material saturated with petroleum, spirits ofturpentine, or other {hydrocarbonaceous liquid. The pipe 32 has abranch, 36, leading into the lower ing a fixed hood, 37, to prevent theabsorbent material entering the tops of the branch pipes 36. Between thehoods and the'pipes is space for the exit of air from the branch pipesinto the compartments 35. The air will become compartments 35, and willbecome freely inflammable.

38 is a pipe extending from the case 33, and having branches 39 leadingto gas-burners 40 in combustion-chambers 41, that are within thereservoirs 10. Only sufficient air is allowed to enter the chambers 41to supply oxygen for the combustion of the gas.

42 is a door in each chamber that may be opened to get access to thesame.

The products of combustion escape from which extends through thereservoir 10, so as chamber and to heat the air in the chamber or fvesselphae memnnieatwn11 a3 a k jQLMKLhQFA, Burr ndingtheenging-cyl i nd or, so as to preyentlthc.eooling.v .o the"'eylii'ider and ctms equentreduction in the pressure of the air in the cylinder.

The invention in its most simple form may have a quantity of compressedcity gas or other inflammable gas in a reservoir in communication withthe burners with a valve or cock, by which the gas may be turned ontoburners when desired. The case 33 may represent such a reservoir.

When the term compressed air is used throughoutthe specification, it ismeant to indicate air above the normal atmospheric pressnre,whether suchpressure is produced by mechanical means or by expansion of the air byheating it above the normal temperature.

I do not claim, broadly, a car-motor driven by compressed air; but

I claim herein as new and of my invention 1. The combination of a car, areservoir for substantially as and for the purpose set forth.

2. The combination, in a car, of a reservoir for compressed air, anengine in communication with the reservoir, gas-burners adapted;

to heat the reservoir, a chamber containing the burners, a pipe open atone end to said chamher, and extending through the air-reservoir; anddischarging into a warming-jacket surrounding the engine-cylinder',andan edu'etionopening at the lower part of said jacket.

3. The combinatiomin a car, of the reservoir for compressed air, anengine in communication with the reservoir, gas-burners adapted to heatthe reservoir, a closed chamber arranged in thebottom of said reservoirand containing the burners, a coiled pipe open at one end to saidchamberand extending through the air-reservoir and discharging into awarmingjaekct surrounding the engine-cylinder, and an eduetion-openingat the lower part of said jacket, substantially as set forth.

4. The combination, with a car, of a reservoir for compressed air, anengine adapted to drive the car and driven by compressed air from thereservoir,a warming-jacket surrounding the cylinder of said engine, acarburetor through which the air is forced by a blower driven by theengine, gas-burners fed by the carburetor contained in a chamber of thecompressed-air reservoir, and a pipe extending from the burner-chamberthrough the eompressed-air reservoir to said jacket, substantially asand for the purpose set forth;

5. The combination, with a car, a reservoir for compressed air, and theengine connected with said reservoir and adapted to drive the car, ofgas-burners for heating said reservoir, a carburetor supplying gas tosaid burners, a blower connected with said carburetor, a closed chambercontaining liquid interposed between said blower and carburetor, and thewheels 25, having perforate wings 26, in said chamber, substantially asset forth.

THOMAS H. BURRIDGE.

Witnesses:

SAML. KNIGHT, EDWD. S. KNIGHT.

ICO

